FB Leads not working with Telegram & Google Sheets

Hi all

Set up those ways a month ago, everything was safe & sound until yesterday when I decided to change the Lead form (wanted to try new form type - High Intent instead of More Volume to increase leads quality. This is where issues started: seems like test forms are not seen by Apiway, several times I even got error messages like "Message: Unsupported get request. Object with ID 'XXXXXXXXXXXXXXX' does not exist, cannot be loaded due to missing permissions, or does not support this operation. Please read the Graph API documentation at https://developers.facebook.com/docs/graph-api. Type: GraphMethodException. Code: 100. Error_subcode: 33. Fbtrace_id: AYputIqONoPtqCmJcH_MdzW.". But at the same time the status tracking tool from Facebook shows me that everything should be working fine showing me 200 HTTP statuses.

I've tried reconnecting Facebook - no luck whatsoever. Any ideas what's going on? Thanks in advance!